Candle socket



K. K. NIELSEN CANDLE SOCKET Filed Jan. 28, 1927 in which the said wiref terminal engages Patented Nov. 6, 1928.

CANDLE My invention relates toelectric'lamp sockcts of the general type designed for use with soc-alled Edison haseincandescent lamps, and

in one of: it's main objects aims to provide a .simple construction in which a single central socketterminal serves as the sole means for securing the socket'shell and the insulating 'parts to each other and to a support; and in Which-the various parts interengage so as to" prevent the rotation of the socket shell the insulating parts and one of the wire terminals with respect to thesupport:

My invention also aims toprovi'de a lamp socket in which the socket shell is insulated from its support by an interposed-insulator shoulders on the said interposed terminal'to prevent rotation of the socket shell upon the support; in ,whish a still lower insulator co-J operates with the said insulatingdiskfor in- .sulating the central "socket, terminal. new; both the socket'shell and the support; and infwhich this lower insulator also has shoulders engaging the support and othershoulders' err.-

gaging both' wire terminals of theso cl :et,so

' that the various-shoulders willlcooperat e inf anchoring'the a'ssembled parts against rota-j tion. v .1

In one of its commercial applications. my

adapted for use in socalled candle socketsfof the type in which the support includes a. pair of-oppositel directed and relatively .slida-1-" lole forks. the upper of which has its bightl,

disposed between the said' interposed insu later and the said lower insulator. HenceQ-I am illustrating and describingmyinvention.

ra's I embodied in such a candle socket, al-" f j though I do. not wish to be limited tothis em "loodiment of the same; Furthermore, I am not here claiming other. features of the disclosedicandle socket, as these. are being .claimed in my separate andpartly divisionalapplication' for vUnited States patent on a .the line 6-6 ATss PATENT OFFICE.

- KARL K. NIELSEN, or CHICAGO, ILLINOIS.

SOCKET. I

det'ailedlohjects will Application filed January as, 1927. Seria1'No. 164,15.

candle socket, filed Augustgl Fig.2 is an enlarged central, vertical and longitudinal sectiontaken through the soizket and insulating tube of '1- and through the upper portion "of the support-in a plane" at rightangles to .Fig. --1',0'r along the line2 2 ofthatfig'ure. 1 i Fig; 3. is a perspective view {of upper forked member of the support.

' Fig.4 is a reduced plan View of middle insulator.

Fig. 5 is areduced plan view of the lower insulator.

j' j Fig. 6 isahorizontal section, 'takenfalon'g h H of; Fig.- 2 through the socket s e.

the line-7-7"of Qand looking: upward;

vFig; 7' is a horizontal section'takenalong 1 Fig. 8 is an elevation of the socket" shell and fthe upper insulaton taken fromthe right hand of the socket shell in.- Fig. 1,

In the'illustrate'd' embodiment, the support 1 for the socket proper comprisesjtwo forked members eachof which has =vertical shanks spaced by an adequate distancefor affording s't' finess to the support and for permitting wires to extend between the inner shanks to.

the terminals of the socket. The lower forlted' i member has as its bottom a suitable threaded I portion, such as an upwardly drawn tubular part 1 for attaching ittothe threaded upper end2 of afixtu rebracket 3,-and has each of novel socket. construction is particularly its parallel shanksprovided with lateral flanges '5 so tlg ateach'shank has a channel shapedtransversesection. "These flanges 5 parallelshank s of the iupper forked p er, and the latter shanks have their outwardly directed faces spaced byla distance f 10i shanks 4: of the lower 'lforked q The upper ma ameies a hints-a1 a top 8 provided with acentral perforation 9 o f '-larger diameterithan that of therivet 10 I which forms .the laxial' contact of the ilamp' socket,

the said support top 8- by an insulating t. rewasher 11 (shown separately in Fig. 4) which 7 as a pair of opposed notches 12 respectively 5 housing the shanks of the support and anabove the top of the usual lower fixture I parts,- such as the ornamental cup 23.

To prevent an undue tightening of the screw '21" from bending the fork shanks to.- ward each other, I place a spacer tube 2i other pair of opposed notches 18 through betweenthe shanks 6 of the upper forked which the terminals let and .15 respectively extend.

The metal socket shellylti seats on a middle 1 insulator 17 (Fig. which has a pair of notches '30 clearing thesa'id ternnnals, and

this insulator in-turn seats on the support top 8. A third'or'upper insulator 18 seats on the bottom of the socket shell, both of the 15 insulators 17 and 18 being shaped as shown in Fig.- 5.- The wire terminal 15 extends to the top of the upper insulator 1S and then fiatwise along the said top, and the rivet-1O passes through it, so that this single rivet O secures the socket shell to the upper supporting member and holds the interposed insulators in effective position, while the upper head of the rivet contac" minal 19 of the lamp bulb 20. The companion terminal 14 extends into the bore of the socket shell and is secured to the latter so as to afford theother circuit connection to "the socket. i

' To keep the socket shell spaced from the vire terminal 15 and the rivet 10, I provide the bottom of this shell with a notch 31 as shown in Fig. 7, which notch connects with an opening 34 in the lower part of the side of the shell as shown in Fig. 8. TheirI preferably alsoprovideithe upper insulator-'18 with a pair of projections 32 disposed at opposite sides of the notch 33 through which the terminal 15 extends downwardly, and indent the socket shell adj acentto these pro-' jections so that the lateral edges of the notch 33 engage the said projections. This engage ment prevents the'upper insulator 18 from rotating in the socket she'll, so as to inter: lock these parts rigidly evenif the other wire terminal 14' (which is secured to the socket shell) should be narrower in width than the notch 13 through which it extends. h

To look the slidably interfitting forks of the two forked members to each other I enrmeans the shanks 4 of the lower forked mem ber) and which extends through vertical slots 22 in the shanks 7 ot the companion forked member, this screw being threaded 'into one of the shanks a as shown in Fig.

When the screw 21 slightly loosened. the

with the axial 'ter-..

ploy a single screw 21 which spansitheforkof the member in which the shanks a-re'more Widely spaced (which in the illustrated case "member and extend the screw through it,

" from the top of the socket shell to the bottom of thesupporting member; thereby enabling the installing electrician to adjust the length accurately and quickly without using thus guarding against having the supporta rule alongside my candle socket. Moreoven I preferably provide each shank 7 o f-the upper forkedmember with an outwardly directed finger 26 for supporting an insulating tube 27 which fits loosely between the socket shell and the usual candle-simulating tube 28 which houses my entire candle socket.

Bymaking the notches in the lower insulator of widths corresponding respectively to those of the two wire terminals and of the upper fork-shanks 7, I prevent a relative rotation of these parts. And, since; the terminal 14 is fastened to the socket shell 16, I likewise prevent the shell from rotating on the supporting member, while the previously described arrangement prevents the upper in- .sulator 1S and the two wire terminals (14 and 15) from rotating about the axis of the socket shell. Hence the single rivet l0 suffices for-holding-the entire upper part of my I candle socket rigidly assembled. Moreover,

since the insulators and the two forked mem-- bers are easily formed by simple punch press operations, my entire appliance can be cli'eaply manufactured.

I-Iow-ever, while I have illustrated and dc scribed my invention in an embodiment including numerous highly desirable details of construction and arrangement, I do not wish to be limited to these, since many changes might obviouslv be made without departing either from the spirit of my inexample, it will be obvious that "the" term support as used in the claims refers to the upper portion of the upper forked member of the illustrated socket, and that my invention- .wouldoperate equally well if other means were employed for supporting this support. v

Irclaim as my invention:

1. An electric candle socket including a supporthaving a top and a pair of shanks vention or from the-appended claims. For,

1 supporting the top, an intermediate insulator .seated on the said top, a socket shell having its base seated on theintermediate insulator,

an insulator above the said intermediate inher so that it will be accessible at all times'sulator disposed within and seated on the base of the socket shell and a lower insulator underhanging the top of the support; a wire terminal secured to the socket shell and having a downwardly extending portion, a.sec-

0nd wire terminal having apart seated on the upper insulator and having a downwardly extending portion; there being alincd perfo rations 1n the three insulators, the seating p art of the second wire terminal, the base of the socket shell and the support top; and a fas-' tening member extending through thesaid alined perforations and headed at each end and approximately fitting the perforations of the three, insulators but smaller in diameter than the perforations in the support top and in the socket shell base the three of the said shell and having a portion thereof projecting into the aperture and engaging the lateral edges of the aperture to prevent rotation of the insulator 1n the shell, the 1nsulator also having a pair of spaced notches,

a wire terminal-extending through one of the notches and secured tothc socket shell, a base contact axial of the shell and extending freely tl'irough the bottom of the shell, and a second wire terminal extending through the other notch and secured to the base ter minal.

3. In an electric socket, a metal shell formed for receiving the base of a lamp bulb, and having a lateral aperture near its bottom, an insulator seated on the bottom of the said shell and having a pair f spaced projectionsprojecting into the aperture and re-- spectively engaging the opposite edges of the aperture to prevent rotation of the insulator in the shell, the insulator also having an opening spaced circumferentially from the said projections, a wire terminal secured to the socket shell and extending through the said opening, a-base contact secured to the insulator, and a second wire terminal secured to the base terminal and extending between the saidprojections and laterally engaging the projections so that the latter prevent the second wire terminal from rotating about the base contact. Y

a An electric candle socket comprising a support having a riser shank and a horizontal support portion at the upper end of the said shank; a threaded socket shell having its base disposed above the horizontal support portion, a lower insulator engaging the bottom of the said support portion, an upper insulator seated on the said socket shell base; a

fastening member extending, axially of the socket shell through said support portion,

- baseand both insulators; and means interposed between the's'ocket shell-and the lower insulator for preventing relative rotation thereof about the fastening member.

,5. An electric candle socket comprising a support having a riser shank and a horizontal support portion at the upper end of the said shank ;-a threaded socket shell having its base Y disposed above the horizontal. support portion,a'lower insulator engaging the bottom of the said support portion, an upper insulator seated on the said socket shell base; a

fastening member extending axially of the socket shell through said support portion, base and both insulators; and a socket terminal fast upon and depending from the socket shell, the lower insulator having shoulders I engaging the said terminal to prevent r0ta tion of the socket shell withrespect to the lower insulator about the fastening member.

6. An electric'candle socket comprising a support having arisershank and a horizontal 7 support portion at the upper end of the said shank; a threaded socket shell having its base disposed above the horizontal support por tion, a fastening member extending axially of the shell through the said base and the horizontal supportportion, insulating means for insulating the shell base from the fastening member and the support portion, and a terminal fast on the said shell, the insulating means including a part interlocked with both the riser shank and the said terminal to prevent" rotation of the shell about the fastening member.

7. An electric candle socket including a support, an intermediate insulator seated on the top of the support, a socket shell seated on the intermediate insulator, an upper insulator disposed within and resting onthe base of the socket shell, a lower insulator underhanging the top of the support; and a single fastening member extending through the three insulators, the base of the socket shell and the top of the support for securing the .said elements to each other, the fastening member serving also as the axial terminal of the socket, the insulators having alined notches; in combination with av wire terminal secured to the socket shell and extending support, an intermediate insulator seated (on the top of the support, a socket shell seated on the intermediate insulator, an upper insulator disposed within and resting on the base of the socket she ll, a lower insulator underhanging the top of the support; and a single fastening member extending through the three insulators, the. base of the socket shell and the top-0f the support for securing the said elements to each other,'the fastening- Ineinber serving also as the axial terminal of the socket; in combination With a Wire terminal secured to. the socket shell, and-a second 10 Wire terminal having a portion seated on the" upper insulator and mounted on the fastening member; the three insulators having two ter'engaging parts arranged to prevent relative rotation thereof.

Signed at Chicago, Illinois, January 7th,

1927. KARL K. NIELSEN. 

